Abstract
Rate coefficients for collisional radiative recombination (CRR) of Ar+ ions with electrons were measured in a helium-buffered flowing-afterglow (Cryo-FALP) experiment in temperature range 77-180 K and at electron densities ne from 108 to 1010 cm−3. The measured ternary rate coefficient KCRR at 77 K is (1.1 ± 0.4) × 10−17 cm6s−1 and the observed temperature dependence agrees well with the theoretical T−4.5 dependence. A new FALP apparatus operating in the temperature range 40-300 K has been built and the measurements are currently in progress.
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